---
title: "Post Text Message"
method: POST
path: "/core/conversations/{conversation_id}/messages"
tags: ["Conversations"]
---

# Post Text Message

`POST /core/conversations/{conversation_id}/messages`

## Request

- Base URL: `https://api.anyreach.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.anyreach.ai/core/conversations/{conversation_id}/messages`
- Auth: HTTP bearer

Send a user message to a TEXT conversation; reply returned synchronously.

Valid only for ``channel="text"`` (409 otherwise). Runs the async engine
inline — no Temporal workflow.

## Path parameters

- `conversation_id` string, required

## Headers

- `x-anyreach-org` string, nullable: Organization ID for user PATs (pat_ prefix tokens)

## Request body

- TextMessageRequest: Body for POST /conversations/{id}/messages (TEXT channel only).
  - `text` string, required: The user's message text
  - `interactivity` 'plain' | 'rich': 'rich' also returns widgets the agent emitted; 'plain' is text only

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/anyreach/apis/anyreach-api.md) - [All operations](https://skmtc.dev/anyreach/apis/anyreach-api/llms.txt) - [OpenAPI document](https://skmtc.dev/anyreach/apis/anyreach-api/revisions/2eddf40c8c93?raw)